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被试的六种无机钠盐对Ni~(2-)-5-Cl-PADAB显色体系有不同程度的增敏作用,并能提高显色反应的选择性。初步探讨了无机阴离子对显色反应作用的机理。已成功地将Ni~(2-)-5-Cl-PADAB-NaBr体系用于废水中镍的测定。
The six kinds of inorganic sodium salts of the test sensitized Ni ~ (2 -) - 5-Cl-PADAB system to different degrees and increased the color selectivity. The mechanism of inorganic anions on the color reaction was preliminarily discussed. The Ni ~ (2 -) - 5-Cl-PADAB-NaBr system has been successfully used for the determination of nickel in wastewater.